replace ruby reference with java

libexec/jenv-prefix

@@ -22,9 +22,9 @@ elif [ -z "$JENV_VERSION" ]; then
 fi
 
 if [ "$JENV_VERSION" = "system" ]; then
-  RUBY_PATH="$(jenv-which ruby)"
-  RUBY_PATH="${RUBY_PATH%/*}"
-  echo "${RUBY_PATH%/bin}"
+  JAVA_PATH="$(jenv-which java)"
+  JAVA_PATH="${JAVA_PATH%/*}"
+  echo "${JAVA_PATH%/bin}"
   exit
 fi
 

libexec/jenv-rehash

@@ -78,7 +78,7 @@ set -e
 [ -n "\$JENV_DEBUG" ] && set -x
 
 program="\${0##*/}"
-if [ "\$program" = "ruby" ]; then
+if [ "\$program" = "java" ]; then
   for arg; do
     case "\$arg" in
     -e* | -- ) break ;;

libexec/jenv-version-name

@@ -20,11 +20,11 @@ version_exists() {
 
 if version_exists "$JENV_VERSION"; then
   echo "$JENV_VERSION"
-elif version_exists "${JENV_VERSION#ruby-}"; then
-  { echo "warning: ignoring extraneous \`ruby-' prefix in version \`${JENV_VERSION}'"
+elif version_exists "${JENV_VERSION#java-}"; then
+  { echo "warning: ignoring extraneous \`java-' prefix in version \`${JENV_VERSION}'"
     echo "         (set by $(jenv-version-origin))"
   } >&2
-  echo "${JENV_VERSION#ruby-}"
+  echo "${JENV_VERSION#java-}"
 else
   echo "jenv: version \`$JENV_VERSION' is not installed" >&2
   exit 1

libexec/jenv-versions

@@ -28,7 +28,7 @@ print_version() {
 }
 
 # Include "system" in the non-bare output, if it exists
-if [ -n "$include_system" ] && JENV_VERSION=system jenv-which ruby >/dev/null 2>&1; then
+if [ -n "$include_system" ] && JENV_VERSION=system jenv-which java >/dev/null 2>&1; then
   print_version system
 fi